drm/amdgpu: use the GTT windows for BO moves v2
This way we don't need to map the full BO at a time any more.
v2: use fixed windows for src/dst
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
index c8059f0..4f5c1da 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
@@ -52,6 +52,8 @@ struct amdgpu_mman {
/* buffer handling */
const struct amdgpu_buffer_funcs *buffer_funcs;
struct amdgpu_ring *buffer_funcs_ring;
+
+ struct mutex gtt_window_lock;
/* Scheduler entity for buffer moves */
struct amd_sched_entity entity;
};